And also to TheBeast, you can re-spawn him again and again if you want, but because you were mean't to kill him in a quest re-spawning him could cause you no end of trouble, i haven't personnaly tried it, i prefer to spawn non-quest related NPC's like bandits and such.but... if you really want J'Ghasta you can spawn him with this code:

troodon 80i'm thinking much too complex in the game. i figure it out that it isn't necessary at all. i was offering glow dust by leaving it to her statue.the i go and click to her statue. then i understand that clicking to her statue is enough to summon her. stupid me.